12" driver with big Xmax,low Fs, & high efficiency? - diyAudio
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Old 25th November 2002, 05:15 PM   #1
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Default 12" driver with big Xmax,low Fs, & high efficiency?

I am search for a 12" sub drive with the Largest Xmax (over 13mm one way),the lowest Fs, highest efficiency that I can find, so for the best I have found is the one spec'ed below.

Does anyone know of a 'better' driver given the requirments?

Thanks,
Brian

FS: 16.3 Hz
Re: 3.36 Ohms (6.72 Ohms per voice coil)
Qms: 11.16
Le: 2.38 mH (4.76 mH per voice coil)
Qes: 0.41
Sd: 506 cm^2
Qts: 0.40
Xmax: 14.3mm one way
Vas: 149 liters
Pmax: 650W
SPL: 84 dB SPL @ 1W, 1m (87 dB @ 2.83 Vrms, 1m)
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Old 25th November 2002, 05:31 PM   #2
bob4 is offline bob4  Germany
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Eminence LAB12??

http://www.prosoundweb.com/lsp

Help! With a rear horn loaded scoop bass bin
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Old 25th November 2002, 05:33 PM   #3
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You don't give any indication of a price range but here are some options:

Blueprint 1201: Xmax = 16mm for $91
Stryke SAE1204: 14.3mm for $109
Adire Shiva: 15.8mm for $125
NHT1259: 13mm for $150
Stryke AV12: 23mm for only $140 on pre-order ($175 normal)
Stryke SAL: 14mm for $179
Blueprint 1203: 26mm for $219
Adire Tumelt: 34mm (!) for $499

All these drivers have various pros & cons so look around the manufacture's web sites for more info. Most manufactures also have other drivers that I haven't listed here.

You say you want high efficiency but you must understand that high efficiency and deep bass means a large box. There's no getting away from it, I'm afraid...

Nice one,
David.
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Old 25th November 2002, 05:49 PM   #4
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Ya like what he said above.....

The Adire Tumult

http://www.creativesound.ca/details.php?model=TUMULT
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Old 25th November 2002, 10:56 PM   #5
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Default Thanks guys

Thanks for the info.

I model those drivers in a sealed box and the one that I listed comes out with the lowest -3dB point at 28.85Hz.

Seems that will be the one I will get.

Thanks again
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Old 25th November 2002, 11:10 PM   #6
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Was that the Adire DPL12?

Steve
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Old 25th November 2002, 11:18 PM   #7
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Default Yes, it is.

Correct.
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Old 26th November 2002, 01:05 AM   #8
JohnR is offline JohnR  Australia
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I like the DPL12. I use them in isobaric configuration in 35 liters (!). They model nicely for infinite baffle too which is where I hope they will end up.

JohnR
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Old 26th November 2002, 01:19 AM   #9
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Default JohnR

JohnR,

What is the advantage to using 2 in an isobaric alignment?

I modeled that in WinISD and the frequency response is the same as a single.


What did you mean:
Quote:
They model nicely for infinite baffle too which is where I hope they will end up.
?


Thanks
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Old 26th November 2002, 01:36 AM   #10
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can never go wroing with the brahma

http://adireaudio.com/mobile_audio/d...hma_series.htm

Param
10" 12" 15"
Fs 35 Hz 28 Hz 26 Hz
Qms 4.4 5.05 5.3
Qes 0.45 0.5 0.52
Qts 0.41 0.45 0.47
Vas 19.2 liters 37.2 liters 99.1 liters
Znom 1 Ohm parallel
Re2 0.65 Ohms parallel
Le3 0.9 mH parallel
BL 14.42 14.38 14.33
Sd 330 cm2 436 cm2 749 cm2
Xmax 27.32mm one way linear
Pmax4 1600W RMS, 4800W peak
SPL5 84.5 dB @ 1W, 1m 84.1 dB @ 1W, 1m 87.1 dB @ 1W, 1m
Diameter 10.5" 12.5" 15.5"
Cutout 9" 11.125" 14"
Depth 6.5" 7.25" 8.25"
Weight 37 pounds 39 pounds 41 pounds
Price $339 $369 $429
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